ROUTE I.--TO GEYSIR AND HEKLA. 103 of the basin over the well or pipe the water rose, through the water in the hasin, to the full circumference of the pipe (31 feet), to the height of about three feet. ‘ The column appeared for an instant as if a solid hody, imme- diately falling into the basin, and ruffling its surface with a series of waves. ‘ Again, the water rose 5 or 6 feet, falling as before, creating a little storm in the basin, and rushing out at the two openings in the rim, the one on the north-east, the other on the east. By the third and fourth rise of these columns, following each other with increasing rapidity, the boiling water came tumbling like a cataract over the basin and down the mound on all sides. Compelled to retire a little distance, columns of water were now dimly seen following each other with loud noise, as they rushed through the tube into the air, each succeeding column higher than the one before it. There were now a series of explosions, giving off enormous clouds of steam, black from their density. . . . The display lasted for about seven minutes from the commencement. ‘ Immediately after the last and highest explosion, the flow down the sides of the mound suddenly ceased, and running up and into the hasin, we found it empty, and the water standing some ten feet down, the tube gradually filling again.’ The writer was fortunate enough to see another eruption the next morning. He was roused by the underground thundering, and with his friends had attained the position from which he had observed the eruption the previous day, before the ‘ explosions had attained their highest elevation. . . . Rising above the dense clouds of vapour, the water in columns was distinctly seen opening out at the top into separate shoots at varying heights, the lower curving outwards, the higher shot up perpendicular, and shattered into diamond drops, sparkling in the sun. The well opens up trumpet-shape into the hasin, the diameter of the curve being about 2 feet 6 inches. To this it appears to he due that most of the water falls outside its margin. ‘Prom one of the columns about a third broke off, and, bending between me and the sun, left his image quite black upon the retina. ‘ Prepared for the close, we had reached the basin in time to see the last portion of its contents running into the well, leaving the basin burning hot, and not a drop of water in it. The water was standing in the well about 12 feet down, and slowly rising, taking about 15 minutes to again fill the hasin. ‘ During these eruptions the rush of boiling water never ceased;

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